Which of the following muscles is NOT a flexor of the forearm?

Correct answer: Triceps brachii

Explanation

The muscles of the arm are organized into compartments with opposing functions. The anterior compartment contains flexors of the forearm (biceps brachii, brachialis, brachioradialis), while the posterior compartment contains extensors (triceps brachii, anconeus).

Other questions

Question 1

In the context of skeletal muscle attachments, what is the term for the moveable end of the muscle that attaches to the bone being pulled?

Question 2

What is the primary role of a muscle that is described as an antagonist?

Question 3

A muscle that has fascicles arranged in the same direction as its long axis is classified as which type of muscle?

Question 4

Which fascicle arrangement allows a muscle to hold more muscle fibers and produce relatively more tension for its size, but restricts the distance the tendons move?

Question 5

How many muscles comprise the group known as the quadriceps femoris?

Question 6

According to muscle naming conventions, what does the prefix 'bi' in a muscle name like biceps brachii signify?

Question 7

Which of the following muscles is the main muscle used for chewing due to its action of elevating the mandible to close the mouth?

Question 8

Which muscle, composed of a frontal and an occipital belly connected by the epicranial aponeurosis, is responsible for moving the scalp and eyebrows?

Question 9

The sternocleidomastoid muscle divides the neck into which two distinct regions when viewed from the side?

Question 10

What is the collective name for the muscle group that forms the majority of the muscle mass of the back and is the primary extensor of the vertebral column?

Question 11

What is the name of the white, fibrous band made of the bilateral rectus sheaths that join at the anterior midline of the body?

Question 12

Which muscle separates the thoracic and abdominal cavities and is the primary muscle of breathing?

Question 13

The levator ani, the most important muscle of the pelvic floor, consists of which two skeletal muscles?

Question 14

What is the collective name for the tendons of the subscapularis, supraspinatus, infraspinatus, and teres minor which connect the scapula to the humerus?

Question 16

The muscles in the superficial posterior compartment of the forearm, such as the extensor carpi radialis longus, originate on which bone?

Question 17

The intrinsic muscles of the hand are divided into three groups. Which group is located on the medial aspect of the palm?

Question 18

The hamstring group, which flexes the knee, is composed of how many long muscles on the back of the knee?

Question 19

What is the name of the band-like muscle that extends from the anterior superior iliac spine to the medial side of the proximal tibia, allowing a person to sit cross-legged?

Question 20

The muscles of the anterior compartment of the lower leg, such as the tibialis anterior, are generally responsible for what movement?

Question 21

What is the name of the structure formed by the tendons of the hamstring group at the back of the knee?

Question 22

Which of the following muscle names does NOT make sense based on standard anatomical naming conventions?

Question 23

The term 'brevis' in a muscle name, such as extensor carpi radialis brevis, indicates that the muscle is:

Question 24

Which muscle compresses the cheek and is used for actions like whistling, blowing, and sucking?

Question 25

How many extrinsic eye muscles control the movement of the eyeball?

Question 26

The erector spinae group, the primary extensor of the vertebral column, is comprised of which three groups of muscles?

Question 27

What is the function of the external intercostal muscles?

Question 28

How many transverse bands of collagen fibers, known as tendinous intersections, typically segment each rectus abdominis muscle?

Question 29

Which muscle, originating on the anterior scapula and rotating the arm medially, is part of the rotator cuff?

Question 30

Which of these muscles is the major abductor of the arm?

Question 31

Which muscle group is responsible for flexing the thigh and extending the leg?

Question 32

Which of the gluteal muscles is the smallest and located deep to the gluteus medius?

Question 33

What is the most superficial and visible muscle of the calf?

Question 34

The muscles in which compartment of the leg are generally responsible for plantar flexion?

Question 35

How many pairs of abdominal muscles cover the anterior and lateral abdominal region and meet at the anterior midline?

Question 36

Which type of fascicle arrangement is characteristic of sphincters?

Question 37

The psoas major and iliacus muscles make up which muscle group?

Question 38

Which muscle, located deep to the biceps brachii, provides additional power in flexing the forearm?

Question 39

The deltoid muscle is a common example of which subtype of pennate muscle arrangement?

Question 40

Which of the following is NOT one of the four main types of action the forearm can perform at the elbow joint?

Question 41

The 'triceps brachii' muscle is named based on having how many origins?

Question 42

The muscles of the posterior compartment of the thigh are primarily responsible for which two actions?

Question 43

How many muscles does the text identify as making up the hamstring group?

Question 44

The muscles of the anterior thorax that position the pectoral girdle include the subclavius, pectoralis minor, and which other muscle?

Question 45

The rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius are all part of which muscle group?

Question 46

Which muscle originates on the mandible and allows the tongue to move downward and forward?

Question 47

Which muscle is NOT part of the erector spinae group?

Question 48

How many flat skeletal muscles are described in the antero-lateral wall of the abdomen?

Question 49

What is the collective term for the four muscles (rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius) that extend and stabilize the knee?

Question 50

The superficial muscles in the posterior compartment of the leg, such as the gastrocnemius and soleus, all insert onto which strong tendon?